Single-dose tetracycline therapy for shigellosis in adults

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Abstract
Adults (42) who had Shigella isolated from stool (26 symptomatic, 16 asymptomatic) received a single oral dose of tetracycline hydrochloride (2.5 g). Minimal inhibitory concentrations of the 42 isolates demonstrated that 41% were sensitive to tetracycline. Sixteen of 18 patients with diarrhea who had tetracycline-resistant Shigella and all 8 patients with diarrhea who had tetracycline-sensitive Shigella were clinically well and had Shigella-negative stools 48 h after therapy. Fifteen of 16 asymptomatic patients demonstrated clearing of Shigella from stool within 48 h of therapy. Single-dose tetracycline therapy is effective in the treatment of Shigella regardless of clinical expression of illness or in vitro sensitive of the organism.